A Daily Dose of Sunlight Can Change Your Life
by Aakanksha Sahu
In the hustle and bustle of modern life, it's easy to overlook the simplest and most natural remedy for our well-being: sunlight. Often taken for granted, the sun offers more than just warmth and light. It plays a vital role in regulating our internal systems, including our cortisol levels and mental health. This article will delve into the importance of sunlight exposure and its profound effects on our bodies and minds.
Sunlight is our primary source of vitamin D, a crucial nutrient that influences various physiological processes including bone health, immune function, and mood regulation. When sunlight hits our skin, it triggers the synthesis of vitamin D, which is essential to produce serotonin, a neurotransmitter known for its mood-stabilizing effects. Serotonin helps regulate mood, appetite, and sleep, and inadequate levels have been linked to conditions such as depression and anxiety.
But sunlight's benefits extend beyond vitamin D production. Exposure to natural light also affects our cortisol levels, the hormone responsible for our body's stress response. Cortisol follows a natural circadian rhythm, typically peaking in the morning to help us wake up and feel alert, then gradually declining throughout the day to promote relaxation and restful sleep.
Research has shown that exposure to natural light, especially during the first hour of waking up, helps synchronize our internal body clocks, or circadian rhythms, leading to more balanced cortisol levels. This spike in cortisol in the morning leads people to feel more alert, motivated, and happier throughout the day. Disruptions to our circadian rhythms have been associated with a range of health issues, including mood disorders, sleep disturbances, and impaired cognitive function. When people seldom go outside on rainy days, the spike in cortisol occurs later in the day, which is what leads to symptoms of anxiety, depression, sleep dysregulation and amotivation during the winter months.
In addition to regulating cortisol levels, sunlight exposure has a direct impact on our mental health. Studies have consistently demonstrated a positive correlation between sunlight exposure and mood enhancement. Sunlight triggers the release of endorphins, our body's natural feel-good chemicals, which can help reduce feelings of stress and anxiety while promoting a sense of well-being and relaxation.
Furthermore, spending time outdoors in natural light encourages physical activity and social interaction, both of which are crucial for mental and emotional health. Whether it's a leisurely walk in the park, a hike in the mountains, or simply sitting outside and soaking up the sun, connecting with nature can have profound effects on our mood and outlook on life.
Unfortunately, modern lifestyles often limit our exposure to natural light. Long hours spent indoors, coupled with increased screen time and artificial lighting, can disrupt our circadian rhythms, and negatively impact our mental health. However, making a conscious effort to incorporate more sunlight into our daily routines can have significant benefits. But Vancouver rarely has any sunlight, right? Research suggests that you should be spending more time outside, especially on gloomy days, as it takes longer for the sunlight to penetrate through the clouds.
Here are some simple ways to increase sunlight exposure and support your mental well-being:
Spend time outdoors: Make it a habit to spend time outside every day, whether it's during your morning commute, lunch break, or evening stroll.
Open curtains and blinds: Let natural light into your home or workspace by keeping curtains and blinds open during the day. This allows sunlight to reach you while you carry on with your day-to-day household activities.
Take breaks outside: Instead of scrolling through your phone during breaks, step outside for some fresh air and sunlight.
Prioritize morning sunlight: Aim to get sunlight exposure in the morning to help regulate your circadian rhythms and cortisol levels.
Practice mindfulness: While outdoors, take a moment to appreciate the beauty of nature and engage your senses.
Sunlight is not just a source of light and warmth; it's a powerful regulator of our internal systems and a natural mood enhancer. By prioritizing sunlight exposure and reconnecting with the outdoors, we can support our mental health, balance our cortisol levels, and cultivate a greater sense of well-being in our lives.
So, step outside, bask in the sunlight, and let nature work its magic on your mind and body!
References
Mead MN. Benefits of sunlight: a bright spot for human health. Environ Health Perspect. 2008 Apr;116(4):A160-7. doi: 10.1289/ehp.116-a160. Erratum in: Environ Health Perspect. 2008 May;116(5):A197. PMID: 18414615; PMCID: PMC2290997.
Petrowski K, Buehrer S, Niedling M, Schmalbach B. The effects of light exposure on the cortisol stress response in human males. Stress. 2021 Jan;24(1):29-35. doi: 10.1080/10253890.2020.1741543. Epub 2020 Apr 6. PMID: 32160826.
Rachel Leproult, Egidio F. Colecchia, Mireille L’Hermite-Balériaux, Eve Van Cauter, Transition from Dim to Bright Light in the Morning Induces an Immediate Elevation of Cortisol Levels, The Journal of Clinical Endocrinology & Metabolism, Volume 86, Issue 1, 1 January 2001, Pages 151–157, https://doi.org/10.1210/jcem.86.1.7102
Scheer FA, Buijs RM. Light affects morning salivary cortisol in humans. J Clin Endocrinol Metab. 1999 Sep;84(9):3395-8. doi: 10.1210/jcem.84.9.6102. PMID: 10487717.
